Silo roof structure



SILO ROOF STRUCTURE Filed Aug. 2, 1939 4 Sheets-Sheet l a a a a a J :3

7;; a o a Inventor Wz'ZZz'amffflzzrrzey,

A itorneys July'23, 1940. w. w. GURNEY SILO ROOF STRUCTURE Filed Aug. 2, 1939 4 Sheets-Sheet 2 Invento Wz'ilz'am Wzzrrzey A iiorneys Jul 23-, 1940. w, W, RNEY 2,208,973

SILO ROOF STRUCTURE Filed Aug. 2; 1959 4 Sheets-Sheet 3 Inventor A iiorneys July 23, 1940. w. w, GURNEY 2,208,973

S ILO ROOF STRUCTURE Filed Aug. 2, 1939 4 Sheets-Sheet 4 A iiorneys Patented July 23, 1940 UNITED sTATEs 2,203,973 SILO noor srauorons William W. Gurney, Winona, Minn., assignor to Madison Silo Company, Madison, Wis.

Application August 2,

3 Claims.

This invention appertains to new and useful improvements in roof structures for silos and the like.

The principal object of the invention is to provide a silo roof of dome shape constructed of a plurality of interconnecting sector-shaped sections.

Another important object of the invention is to provide a silo roof construction whereinthe parts can be preformed readily at the manufacturing plant and subsequently assembled without any definite degree of Skill on the part of workmen, on the job.

These and other important objects and advan- 15 tage-s of the invention will become apparent to the reader of the following specification.

In the drawings: v

Figure 1 represents a top plan view of theroof.

Figure 2 is a section on the line 2-2 of Figure 1. I

Figure 3 is a section on the line 33 of Figure 1.

Figure 4 is a fragmentary detailed sectional view showing the tie rod anchoring means.

Figure 5 is a fragmentary inside elevational view of the lower portion of the roof at one of the ribs.

Figure 6 is afragmentary detailed sectional view on the line 6-6 of Figure 5.

Figure 7 is a fragmentary side elevational view of the roof at the doorway.

Figure 8 is a fragmentary horizontal sectional view taken substantially on the line 8-8 of Figure 7. T

Figure 9 is a fragmentary detailed sectional View taken substantially on the line 99 of Figure 7.

Figure 10 is a sectional view taken substantially on the line lib-Ill of Figure 7.

Figure 11 is a section substantially on the line H--|l of Figure 3.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the roof is generally constructed of the roof proper 5, dome 6 and cap e o f p p 5 is constructed of a plurality of sectors which will be alternately referred to by reference characters 8 and 9. The sectors 8 and 9 are connected together by rib structures such as is shown in Figure 2. Each rib structure consists of the elongated longitudinally arcuate-shaped outside channel member Ill and the inside channel member ll. Each sector 9 has one edge portion bent inwardly and backwardly as at l2 to define a channel in which the inturned edge portion l3 1939, SerialNo. 288,051

of the clip strip [4 is disposed. This clip M embraces the outwardly curved edge portion 15 of the outside channel member Hi and fits snugly against one side flange of the channeled memher I 0 as shown in Figure 2. The inside chan- 5 nel member H has side wing portions Iii, one of which bears against the innermost portion of the clip l4 while the other wing member I6 is embraced by the clip strip IT. This clip strip H has the inwardly bent edge portion l3 which 10 engages into the channel defined by the inwardly and backwardly bent adjacent edge portion IQ of the corresponding panel 8 (see Figure 2). The adjacent edge of the channel member in has the outstanding flange which bears against 16 the outside of the adjacent edge portion of the 7 panel 8 to hold the same snugly against the inturned edge portion is of the clip strip ll. To hold these parts all in firmly clamped position a tapered screw is disposed through the outside 20 channel member til at desired intervals and screwed into a corresponding opening of the inside channeled member II. This action of the screw 2! draws the channeled members Ii! and El together and causes the parts aforedescribed to 25 firmly bind or clamp together.

As shown in Figures 5 and 6 and again in Figure 4, a tie rod 22 provided with a turnbuckle or the like (not shown) extends around the lower portion of the roof part 5 where the latter overlaps the concrete side wall structure 23 of the silo (notshown).

This tie rod 22 extends through the slots 24 in the lower portion of the rib structure aforedescribed and which will be generally referred to by A. Thus with the tie member 22 disposed through the slot 24 the lower portion of the part 5 of the roof will be held againstthe silo wall structure 23. Hook bolts 25 as shown in Figure 6 are hooked over the tie rod 22 and the threaded shank portion is disposed through openings in the channel members [0 and II. Nuts 26 on the threaded shank at the inner and outer sides of the channeled members In and it serve to properly fix the hook bolt to the rib structure Ill. As shown in Figure 4, a hook bolt 27 embraces the tie memberzz and has its shank 28 disposed through an opening in the wall structure 23 of the silo so as to prevent any tendency of the roof to lift in the event of high winds. The

shank 28 is equipped with a nut or other detent 29.

As shown in Figure 1, angle bars 30 can be secured in position across a pair of adjacent rib structures A to form a ladder over the part 5 of the roof.

As shown in Figure 3, the upper edge portion of the roof part 5 extends against the vertical flange a of an angle iron annulus 3|. Tie bolts 32 extend upwardly through the base of this annulus 3| and through the panels 8 and 9 and also through the dome structure 33. The upper ends of the bolts 32 are equipped with wing nuts 34 which can be fed downwardly against the dome 33 to firmly hold the dome in place upon the upper edge of the annulus 3|. The dome 33 is of frustro-conical shape and has radially disposed corrugations 35.

A conical-shaped cap member 36 is disposed over the upper portion of the dome and is suitably secured in place. Suitable rivets or the like can be employed for securing the structure part 5 of the roof directly to the annulus 3|.

The sliding door structure is as illustrated in Figures 7, 8, 9 and 10. As can be seen in. Figures 1 and '7, one of the panels 8 is shortened and is identified as panel 8a. Parallel guide rib structures generally referred to by reference characters B-B are secured at their upper portions by the binding plates 31 to the adjacent rib structures A. As before stated these rib structures B-B are parallel disposed and are intended to define guideways for the upper and lower slide doors 38 and 39. Between each of the rib structures B and the adjacent rib structure A is a narrow panel 40 and these panels 40 are connected to the rib structures A in substantially the same manner as the panels 8 are connected to the ribs A (see Figure 2.) In respect to the rib structures B, the panels 40 are bent inwardly and backwardly as at 4| to define channels into which engage the clip strip 42 which also embrace the outturned outer edge portions 43 of the external channel members 44. The clip 42 embraces the inside of the channel member 44 and against the clip strip 42 bears the lateral wing member 45 of the intermediate channel member 46, and against the wing 45 engages the wing 41 of the internal channel member 48. Along their opposite edges, the channeled members 44, 46 and 48 have outstanding flanges 49, 5B and 5| which are held in spaced relation due to the particular shapes of the channeled members and these are held together by the aforementioned means and the screws 52 which are of the same type asthe screws 2|. Thus slideways 53 and 54 are defined in each of the rib structures B for receiving the offset edge portions of the upper and lower slide doors 38 and 39. The lower slide door 39 has the outstanding flange structure 55 which can abut the outstanding'fiange 56 at the upper edge of the apron 5'], this apron 51 having its end portions interlocked with the lower portions of the rib structures B-B.

The upper edge of the slide door 39 is bent upwardly and against itself asat 58 for the purpose of reinforcement, and is equipped with a handle structure 59.

The upper door 38 has a handle structure 60 adjacent its lower portion and its lower edge is bent outwardly and backwardly and against itself as at El to define a reinforcing flange.

The upper edge of the slide door 38 is slightly offset as at 52 and has its edge portion fed backwardly against itself for reinforcement as at 33.

As can be seen in Figure 9, at the lower edge of the sector 8a an angle member 34 is provided over the top flange of which is bent the lower edge portion of the sector 86! as at 65.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the claimed as new is:

1. In a roof for silos, a pair of upwardly tap-ering and outwardly bowed plate-like sections arranged in adjoining relation with side edges confronting and spaced apart, said side edges being inturned and forming grooves extending along the same, and means to secure said sections together comprising a pair of strip-like clips having side edges bent upon themselves to provide tongues slidably interfitting with said grooves, and a pair of channel type tie members extending between said sections in nested spaced relation and slidably interlocking with said clips, respectively, said members being secured together in clamping relation with respect to the edges of said sections and said clips.

2. In a roof structure for silos, a pair of upwardly tapering outwardly bowed plate-like sections arranged in adjoining relation with side edges confronting and spaced apart, said side edges being turned back upon themselves to previde grooves extending along the same, a pair of strip-like clips having side edges bent upon themselves to provide tongues slidably interfitting with said grooves, a pair of tie members of channel type extending along said edge of each section and secured in clamping relation to the clip of said edge, said pairs of tie members being connected together and constructed and arranged to provide door guideways for a sliding door, and a door slidably mounted in said guideways.

3. In a roof structure for silos, a pair of upwardly tapering plate-like sections arranged in adjoining relation with side edges confronting and spaced apart, said side edges being turned back upon themselves to provide grooves extending along the same, a pair of strip-like clips having side edges bent upon themselves to provide tongues slidably interfitting with said grooves, a pair of tie members of channel type extending along said edge of each section and secured in clamping relation to the clip of said edge, said pairs of tie members being connected together and constructed and arranged to provide door guideways for a sliding door, and a door slidably mounted in said guideways.

WILLIAM W. GURNEY.

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